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苯胺氣體檢測管 Aniline C6H5NH2 181S 1-30ppm,氣體檢測管是用來檢測某種氣體在某一環(huán)境中所含濃度的簡易檢測裝置,通過檢測劑與被檢測氣體的反應而出現(xiàn)顏色變化,來表示所測環(huán)境中的氣體濃度。在不用任何能源、電源的情況下,具有操作簡單、使用范圍廣、檢測準確、即時性強和經(jīng)濟的特點。www.yd17.cn
更新時間:2024-12-18
在線留言苯胺氣體檢測管 Aniline C6H5NH2 181S 1-30ppm
Tube 81S
1. PERFORMANCE
1) Measuring range :2-30 ppm 1-15 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :0.5 minutes/1 pump stroke
3) Detectable limit :0.05 ppm(200mr)
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with p-Dimethylamino-benzaldehyde, Azomethine is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
2
5
10
15
20
25
30
ppm
100ml
GAS To pump
DEHUMIDIFIER
(White)
181S ANILINE
Substance Interference ppm Coexistence
Toluidine Similar stain is produced. Aniline conc.×1/3 Higher readings are given.
Ammonia FIG.1 Tafhfeec atecdc.uracy of readings is not Tofh Ae nsialinmee conc. 〃
Paraffin amines 〃〃
Aromatic amines 〃〃
(NOTE)
In case of 2 strokes, following formula is available for the actual concentration.
Actual concentration=1/2×Reading value.
0
50
30
20
40
10
Ammonia〔ppm〕?
FIG.1 Influence of Ammonia
Aniline indicating value 〔ppm〕
10 20 30 40 50 60
Coexistence
Interference
NH2+CHO N(CH3)2 N=CH N(CH3)2+H2O
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